本文整理汇总了Java中org.apache.parquet.hadoop.ParquetReader.Builder方法的典型用法代码示例。如果您正苦于以下问题：Java ParquetReader.Builder方法的具体用法？Java ParquetReader.Builder怎么用？Java ParquetReader.Builder使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.parquet.hadoop.ParquetReader的用法示例。
在下文中一共展示了ParquetReader.Builder方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: getSchema
import org.apache.parquet.hadoop.ParquetReader; //导入方法依赖的package包/类
@Override
public Schema getSchema(Configuration conf, Path path) throws IOException {
AvroReadSupport<GenericRecord> readSupport = new AvroReadSupport<>();
ParquetReader.Builder<GenericRecord> builder = ParquetReader.builder(readSupport, path);
ParquetReader<GenericRecord> parquetReader = builder.withConf(conf).build();
GenericRecord record;
Schema schema = null;
while ((record = parquetReader.read()) != null) {
schema = avroData.toConnectSchema(record.getSchema());
}
parquetReader.close();
return schema;
}
示例2: readData
import org.apache.parquet.hadoop.ParquetReader; //导入方法依赖的package包/类
@Override
public Collection<Object> readData(Configuration conf, Path path) throws IOException {
Collection<Object> result = new ArrayList<>();
AvroReadSupport<GenericRecord> readSupport = new AvroReadSupport<>();
ParquetReader.Builder<GenericRecord> builder = ParquetReader.builder(readSupport, path);
ParquetReader<GenericRecord> parquetReader = builder.withConf(conf).build();
GenericRecord record;
while ((record = parquetReader.read()) != null) {
result.add(record);
}
parquetReader.close();
return result;
}